Engineered high-performance functional tapes serving standard SMT, ESD containment, and demanding structural applications globally.
An authoritative analysis of moisture vapor transmission, electrostatic discharge mitigation, and thermal-bond integrity.
In the modern microelectronics ecosystem, humidity control and moisture vapor prevention are critical to preserving component reliability. Devices like integrated circuits (ICs), passive surface-mount components, and highly sensitive automotive sensors are susceptible to moisture absorption during shipping and storage. When subjected to reflow soldering, trapped moisture expands rapidly, causing delamination, internal micro-cracking, and the destructive phenomenon known as "popcorning."
As a leading domestic manufacturer, Jiangsu Yongjia Electronic Materials Co., Ltd. develops engineered protective interfaces and structural cover materials designed to isolate semiconductors and electronic components from environmental moisture and mechanical damage.
By coordinating low Moisture Vapor Transmission Rates (MVTR) with precise electrostatic discharge (ESD) shield layers, our materials meet rigid SMT carrier specifications. This preserves peel-force stability and prevents device contamination across varying global climates.
Surface resistivity is precisely maintained within 105 to 1011 ohms/sq, ensuring electrostatic discharge protection for microcircuits during high-speed SMT picking.
Maintains consistent peeling force parameters, eliminating mechanical shock or component displacement during automated high-speed unwinding.
Uses cross-linked solvent-acrylic and heat-activated adhesives that prevent molecular outgassing and avoid chemical contamination on chip pads.
Multilayer barrier structures combine high mechanical strength, puncture resistance, and chemical inertness to withstand heavy industrial wear.
Established in June 2007 in Nantong, Jiangsu Province, Jiangsu Yongjia Electronic Materials Co., Ltd. has developed into a leading domestic service provider of high-reliability tape products. Operating a 16,000 square meter facility with a 9,000 square meter building area, the company maintains advanced cleanroom production lines, high-precision slitting installations, and coating systems.
Our R&D laboratory focuses on polymer formulation, adhesive synthesis, and anti-static coatings, producing solutions for heat-seal cover tapes, self-adhesive cover tapes, acetate cloth tapes, glass fiber tapes, and specialized PET tapes. With a workforce of over 100 specialists, we deliver critical protective materials for semiconductor packaging, automotive modules, electrical appliances, and sheet-metal stamping.
Detailing the technical properties and performance characteristics of our primary product lines.
Designed for sealing polystyrene, polycarbonate, and paper carrier tapes, these cover tapes provide thermal activation under precise pressure and temperature configurations. They deliver steady peeling force metrics, preventing component jamming or tape tearing on high-speed SMT feeders.
Equipped with pressure-sensitive adhesives (PSA), our self-adhesive cover tapes cure at room temperature without requiring heat tooling. This limits thermal stress on heat-sensitive electronic components and chips, while maintaining aging resistance under humid storage conditions.
Constructed from high-purity acetate fiber backing coated with rubber or flame-retardant acrylic adhesive, these tapes offer high temperature resistance (up to 150°C), conformability, and dielectric strength. They are suitable for transformer coil insulation, wire harness wrapping, and motor insulation.
Featuring thin polyester film backings and high-adhesion silicone or acrylic resins, our PET tapes insulate battery pack components, provide masking during PCB plating, and protect delicate SMT structures against chemical exposure and thermal cycles.
Reinforced with glass yarns, these tapes feature high tensile strength, minimal elongation, and flame resistance. They provide secure bunding for heavy industrial coils and core wrapping, and serve as mechanical barriers in high-stress lithium-ion battery modules.
Specially designed to meet UL510 and UL94 V-0 requirements, our flame-retardant acetate and composite cloth configurations prevent fire propagation in high-voltage power supplies, automotive wire harnesses, and home electronics.
Delivering high-reliability barrier and packaging materials across global manufacturing sectors.
How Jiangsu Yongjia optimizes material flows, ensures quality control, and minimizes logistics risks.
Located in Jiangsu Province, we operate within a developed electronic materials cluster. This allows us to source raw PET films, acetate fabrics, and specialty functional resins with stable pricing and short lead times.
Our chemistry laboratory supports adhesive synthesis, custom chemical formulation, and aging tests under varying humidity levels. We adapt cover tape peel-force profiles to match customized carrier tape materials.
With 16,000 square meters of production space, we operate multiple coating and slitting lines. This capacity allows us to manage high-volume orders for global electronic manufacturing services (EMS) providers.
We offer trace inspection documentation, from incoming raw material batches to finished goods. Each consignment is shipped with an inspection certificate, ensuring compliance with RoHS and REACH standards.
Jiangsu Yongjia supports international standard interfaces. Our products comply with EIA-481-E standards for carrier tape configurations, assuring compatibility with pick-and-place equipment globally. We assist multinational compliance managers by providing comprehensive product material declarations, including halogen-free test results, REACH SVHC declarations, and UL fire-safety certifications.
Verified compliance systems ensuring manufacturing consistency and material safety.
Technical articles regarding SMT cover materials, semiconductor packaging progress, and factory developments.
Against the backdrop of steady growth in the global cover tape market, capacity optimization and technological advancement have become core competences. Jiangsu Yongjia is upgrading its cleanroom coating infrastructure to meet increasing demand.
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Driven by the miniaturization and integration of electronic components, the demand for customized packaging materials is becoming increasingly prevalent. Our room-temperature curing PSAs provide stable sealing properties.
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As the semiconductor industry shifts toward domestic sourcing, breakthroughs in material reliability have become crucial. Our enhanced high-temperature heat-seal cover tapes provide stable protection for delicate IC packaging applications.
Read Full ArticleTechnical answers regarding material properties, ESD limits, cover tape compatibility, and order options.
Heat-seal cover tape (HSA) requires heat and pressure to activate its adhesive backing, creating a secure bond with the carrier tape rails. It is preferred for automated high-volume packaging due to its cost efficiency and long shelf life. Self-adhesive cover tape (PSA) utilizes a pressure-sensitive adhesive that seals at room temperature without requiring heat tooling, protecting heat-sensitive chips and sensor modules from thermal stress.
We follow strict testing protocols based on the EIA-481-E standard. During production, we measure peel force using SMT feeder simulators. We verify that the peel force remains within the standard 10g to 130g range, limiting variations and preventing component ejection on high-speed SMT pick-and-place lines.
We provide three options: non-conductive, dissipative, and conductive cover tapes. For static-sensitive devices (such as high-density microchips), our dissipative tapes maintain a surface resistivity of 105 to 1011 ohms/sq. This prevents triboelectric charging during high-speed unwinding, protecting components from electrostatic discharge damage.
Our flame-retardant acetate cloth tape utilizes high-purity acetate fiber backing coated with custom flame-retardant acrylic or rubber adhesive. The tape offers high temperature resistance (up to 150°C), conformability, and dielectric strength. It meets UL510 flammability standards, making it suitable for electrical transformer wrapping, lithium-ion battery isolation, and automotive wiring harness protection.
Yes. All materials manufactured by Jiangsu Yongjia undergo third-party testing to verify compliance with RoHS Directive 2011/65/EU and its amendments, REACH SVHC regulations, and halogen-free standards (IEC 61249-2-21). Testing documentation is available upon request for quality verification.
We provide custom slitting down to a width of 5.3mm (compatible with 8mm carrier tapes) up to wider logs. Our rolls are available in standard SMT lengths (typically 300m, 480m, or 500m) or custom lengths to reduce roll changeover downtime on assembly lines.
To preserve the stability of the adhesive layer and maintain consistent peeling force, we recommend storing our tapes in their original packaging at a temperature of 21°C (±5°C) and relative humidity of 50% (±10%). Avoid exposure to direct sunlight and high ambient temperatures.
For standard widths and specifications, the typical factory production lead time is 7 to 10 days. Customized adhesive formulations or special widths require approximately 15 days from technical confirmation. Shipping times depend on the destination port and shipping method (FOB Nantong or CIF options available).
Select standard or reinforced structural tape configurations to meet your manufacturing requirements.
YONGJIA Electronic